Since this is apparently an issue why not allow user to select the color space?
Basically select obj and and have a toggle that converts the values on the fly. This way exporters would not have to be modified for different pieces of software.

I did using this post. What else I can do?

It's not about material edit-ability. It's about ability to join multiple models from multiple other pieces of software.

Could we at least have the switch/button that would allow us just export the scene? Much like the Sketchup exporter.
Also I have the hunch. Are you saying that the exporting is happening at the plugin start?
Couldn't the plugin just read the list of materials first and continue exporting while I ...

rappet - that's exactly what I had in mind. I'm not sure how the plugin is handling the export process, but there is some conversion happening already.
Is it converting to obj or ocs? I don't know.
I have noticed that there are the ocs files for all textures being exported, but nothing for the model ...

Thank you for reply. Is there any way to at least get the Octane enhanced obj export?

I cannot find the option/possibility to save the octane scene for a future edit outside of Archicad.
I like to combine models from different sources in the OR editor.

Not sure why the license is a problem here? Sketchup exported is open. Why the blender plugin could not be?
Octane would benefit from the large blender user base.

Got it. Thanks.

It works in for Indigo. you should check it out.
There is additional information that can be stored with skp file that is not immediately visible in Sketchup, but helps you set up the scene before you export.